Previously VideoFrame.Buffers would be converted to I420 if apply_rotation() is true. With this change the operation is skipped if the rotation is 0. Bug: webrtc:7749 Change-Id: I24a1a8801e41d8f415b33fe57fec953b74df7459 Reviewed-on: https://webrtc-review.googlesource.com/4665 Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Commit-Queue: Sami Kalliomäki <sakal@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20038}